Railway frog



July 5,1927. 1 34,638

, A. L. VISSAT RAILWAY FROG Filed Auz. 1926 2 Sheets-Sheet. 1

EN TOR ATTORNEYS.

Fat-elated July 5, 1927.

a E gle.

Par-gar @FRFEQE.

ANTHONY 1 VISSAT, on JEANNET-TE BOROUGH, PENNSYLVANIA.

RAILWAY FROG.

Application filed August 11, 1926. Serial No. 128,596.

Letters Patent of the United States No.

1,231,676 were "issued .to meon'July 3, 1917, for certain improvements in this type'of railway frogs, and the present invention comprises further improvements in the same.

Among the objects which I have in view in the present invention are'rthe following.

The improvement of the construction of the movable frog to render the same stronger and more durable T he provision ofineans to prevent derailment and avoid injury to the frog mechanism in caseta'car orlocomotivemoves out of the'closed track, I

The prevention 'of the clogging of-the movements'of the movable'frog plate by the accumulation of dirt. v v

The provision of means whereby the movable plate may beinstalledor removed and .the connections forshiftingj the same may be installed,removedor repaired without disturbing the bed plate orthe ballast or roadbed; I

v The provision of means for carrying the blind drivers of alocomotive over the rail joints of the 'frog Withoutjumping or jarring.

The accomplishn'ient of other important objects will appearfrom the accompanying description. i v

la the accompanying;drawings, wherein T have illustrated the best embodiment of the p inciples of iny'invention now known to ie, Fig. 1 is a view in plan of the railway free, the movable frog ,plate being; positioned to complete the rail of the intersecting trac'kpl ig. 2is an'invert'edplan view on enlarger; scale of the bed plate and its end castings and also showing; theshifting bars of the frog plate; Fig, 3 is a sectional v1 .v

taken alongth'e line Ill-T11 1 illustrating the mounting of the frogyplate on the bedplate andthe means for shi'ft ng'the former 1 J 1 plate yl im is a top plan'vi'eW ofthe bed an v 1 h its end castings dismounte glfrgs. he views in plan at the Wm end castings; Fig 7 is a sectional view taken along the line VIIVII'in Fig. 1 and showing the assemblage. and connections of the" various parts, and Fig; 8 is a plan view of the frog showing the frog plate positioned to complete the rail of the tangent tr'aek'. Referring to the draWings,-th'e frog structure comprises four'rnain elements',' the bed plate 1, theend members 2 and?) andthe frog plate 4. The bed plate is preferably of rolled steel While the end members and the "frog plate are preferably castings of hard steel, such as manganese or other suitable alloy. I I

The frog is supported by the track ties,

1 being supported by the ties 5",'5, 5- and 5", being secured in place by spikes driven through holes, s'uch'as'G, in the plate. I

@ne end of the bed plate 1 is provided -With an extension 7 having a squared end, and the'endcasting 2 1S undercut at its inner end-to overlap lnvvardly over said-extenslon and-has a vertical shoulder 8 which abuts against theend of the latter. Bolts 9extend down through the casting and extension, and

10 represents one or more squared lugs depending from the casting and snugly fitting the socket holes 11 in the =extension'to rel'ieve the boltsof strain and-torque, and also to facilitate theproper positioning of eastingrelative tothe bed plate.

Likewise the inner end of the other end asting 3 is undercut to overlap the end of the bed plate 1 and the two elements are secured t'oja ether-by the bolts 12, and alsoby, the b ttoni lug 13 "of the casting fitting 'snugly in the socket holel l ofthe bed plate.

he casting 2 is spiked to Formed integrally on the end casting 2 are the two rail members 20 and 21 which are alincd with the adjacent ends of the track rails 17 and 18, respectively and are in angular relation with each other, merging in a V with a squared apex. The rail members 17 and 18 stop short of the outer end of the casting and the sides of the casting are contoured so that the inner sides of the rail ends 17 and 18 will fit snugly up against the same with their extremities abutting against the rail inemberzs 20 and 21. The outsides of the rail members 20 and 21 are contoured similar to the sides of a track rail, so that the standard angle bars 22 may overlap the rail joints on the outside, and bolts 22 extending through the angle bars and transversely through the 'asting may be ci'nployed to hold the angles and rails rigidly in position, thus securing the rails 18 and 17 in fixed alinement with the rail members of the casting 2.

Similarly the castin 3 is integrally provided with the rail menicers 223 and 24 which are alined respectively with the adjacent end portions of the track rails 17 and 18. The inner ends of the rail members 23 and 2 1 are alined respectively with the rail members 20 and 21 respectively, but do not merge with each other at their inner ends, allowing clearance for the travel of the flanged wheels on the rail member 23. The outer ends of the rail members 23 and 2 1 stop short of the outer end of the casting 8 and the end portions of the rails 17 and 18 fit snug against the sides of the casting 3 and abut against the end of the rail portions 23 and 24, angle bars 25 overlapping the joints on the outside and being bolted in place by bo'lts26 extending through the casting.

The movable frog plate 4 is provided with two rail members 27 and 28 in angular relation to each other and so disposed. that when the frog plate is shifted into the position shown in Fig. 1, the rail member 28 fills the gap between the adjacent ends of the rail members 21 and 2-1 and this completes the track rail 18, and when the plate 1 is shifted into the position shown in Fig. 8, the rail member 27 fills the gap between the rail members 20 and 23 and this completes the tracl; rail 1?.

The bed plate 1. is provided with a pair of parallel and transversely disposed slotted openings 29 through which extend the lugs iii) depending integrally from the frog plate l-i the lugs being rectangular and suliicicntly elongated to form a bearing on the side walls of the slots and thus cause the frog plate to move in proper alinement. The lugs protrude downwardly through the slots and their lower ends are recessed at either side so that the twin connecting bars 31. which have notches to provide clearance for the reduced necks of the lugs, will lit snugly together with the lugs clamped between them. The twin bars are rigidly yet detachably secured together by the bolts 32 positioned near their opposite ends, so that by sliding the bars, and the frog plate in the proper direction the bolts 32 at either end of the connecting bars may be exposed from beneath the bed plate 1, thus enabling the bolts to be removed and the bars and frog plate dismounted or replaced without disturbing the bed plate or the ballast or road bed.

The ends of the twin bars 31 are pro longed, twisted ninety degrees and turned back over the upper surface of the bed plate, extending to the adjacent edge of the frog plate, thus forming shields or covers 33 for the otherwise exposed ends of the slots 29 as the frog plate moves along the same, thereby preventing the entrance of dirt in the slots which. would result in clogging the movement of the frog plate.

On either side of the recessed portions of the bars 31 which engage the lugs 30, the abutting faces of the twin bars are recessed to provide the openings 34 which provides clearance for dirt to drop down out of the slots 29 should such accumulate.

The underside of the frog plate 4: is transversely channelled as shown at 35 to reduce the area of the bearing surfaces in sliding contact and thereby lessen friction.

The fact that the bed plate 1 and the frog plate 4 are of different material, the former of rolled steel and the latter of alloy steel casting, thus providing surfaces of different material reduces the friction and wear of the sliding surfaces.

The straight end of one of the bars 31 of 1 each pair is prolonged, as shown at 31*, and each is connected by the link 36 to one arm of the bell-crank levers 37 mounted on vertical axis at the side of the track 1617. the other arms of the levers 37 being connected to the reach rod 38 which extends to the switch mechanism and is operated in unison with the latter so as to shift the frog plate in unison with the switch point.

39 represents a filler member integral with the casting 2 and interposed between the converging rail members 21 and 22 thereof and also extending outwardly to the outer end of the casting 2 between the end portions of the rails 17 and 18. The top surface of the filler is an ascending incline rising to the top level of the rail members 17 and 18 at their apex, and at either-side said filler is provided with a relatively shallow groove 40.

The function of this filler is to receive the tread of the blind driver or drivers of the locomotive and carry the same along to the frog plate without the usual jarring and jolting. It is understood that the blind drivers usually have a slightly concaved tread with shallow flanges or fins at the sides. The treads of the blind drivers are somewhat broader than those. of the flanged drivers and thus a broader treadway provided by the filler 39 furnishes the necessary continuous surface for their travel.

It frequently happens that through either accident or carelerisness, a car or locomotive moves out of a closed track, such for instance the track'lormed by the rails 18 and 19 when the switch is set against it and the movable i'rog plate occupies the relative position shown in Fig. 8.

Unless special provision be made to take care of such a situation, the moving car or locomotive usually becomes derailed and the "frog seriously damaged.

To prevent derailment or damage under such circumstances, I provide means whereby the wheels of the moving car or locomo-. tive will be safely carried over the frog and directed to the proper rail.

Thus the left hand end portions "of the rail members 27 and 28 ot' the frogpla-te 4- are provided on their adjacent sides with risers ll and 42, respectively, said risers being integral and gradually inclined portions rising from the end of the plate 4: at the top level of the latter to substantially the top level of the rail members, said risers having a concaved top surface to avoid interference with the flanges of the Wheels normally traveling on the rail members 27 or 28.

On the opposite or outer sides of the rail members 27 and 28 I provide the guard rail members 43 and 4: 1, respectively which are inclined upwardly toward the right end of the frog plate and at the end of said plate are of full rail height. These guard rails are so located and disposed that when the rail member 28 is alined with the rail members 21 and 24- to complete the'interrupted rail 18, the guard rail 44 registers "with the rail member 23 of the casting 3, as shown in Fig. 1, and when the rail member 27 is alined with the rail members 20 and 23, completing the interrupted rail 17, as shown in Fig. 8, the guard rail 13 registers with the rail member 2 1.

ihus with the frog set as shown in Fig. 1, opening the intersecting track 18 19 to the tangent track 16-17 and interrupting the latter, the flanges ot the wheels of a car moving from left to right on the rail 17 would engage the riser l2 which would-carry the wheels up and diagonally across the member 28 and into engagementwith the guard rail lt which the treads of the wheels would mount and thence travel in safety, along the rail member 23 to the rail 17.

Again with the frog plate set as shown in Fig. 8 with the tangent track 17 -18 open and the intersecting track 181 9 closed, the flanges ot' the wheels moving toward the frog on the rail 18 would engage the riser the guard rail 43 and be delivered to the rail member 2 1 and the rail 18. .Thus accident would be avoided.

What desire to claim is:

1 A movable frog for railway tracks comprising a bed plate mounted at the rail crossing, said bed plate being provided with parallel and transversely disposed slots, a movable frog plate mounted on the bedplate and provided with a pair of rail members in angular relationto each other and so disposed that when the frog plate is in one of its positions one of its rail members completes the interruption of one of the fixed track rails and when the frog plate is in its other position its other rail member com pletes the interruption in the other fixed track rail, said frog plate being provided with depending lugs protruding downwardly through the slots in the bed plate, connections with said lugs for shifting said frog plate, and means tor covering the portions of said slots which would otherwise be exposed by the shifting of said frog plate.

2. A movable frog for railway tracks comprising a. bed plate mounted at the rail crossing, said bed plate being provided with parallel and transversely disposed slots, a movable frog plate mounted on the bed plate and provided with a pair of rail members in angular relation to each other and so disposed that when the frog plate is in one of its positions one of its rail members completes the interruption of one of the fixed track rails and when the frog plate is in its other position its other rail member completes the interruption in the other fixed track rail, said frog plate being provided with depending lugs protruding downwardly through the slots in the bed plate, connections with said lugs forshiftingsaid frog plate, and means moving with the frog plate for covering the portions of said slots that would otherwise be exposed by the shifting of said frog plate.

3. A movablefrog for railway tracks comprising a bed plate mounted at the rail crossing, said. bcd plate being provided with parallel and transversely disposed slots, a movable 'lrogplate mounted on the bed plate and provided with a pair of rail members .in angular relation to each other and so disposed that when the trog plate is in one of its positions one of its rail members completes the interruption of one of the fixed track rails and when the frog plate is in its other position its other rail member completes the interruption in the other fixed track rail, said frog plate being provided with depending lugs protruding downwarc 1y through the slots in the bed plate, connections with said lugs for shifting said frog plate, and means carried by said connections fill for covering the portions of said slotsthat would otherwise be exposed by the shitting of said :t'rog plate.

4. A movable frog for railway tracks com prising a bed plate mounted at the rail crossing, said bed plate being provided with parallel and transversely disposed slots, a movable frog plate mounted on the bed plate and provided with a pair of rail members in angular relation to each other and so disposed that when the frog plate is in one 01" its positions one of its rail members com pletes the interruption of one ot the lixed track rails and when the trog plate is in its other position its other rail member com pletes the interruption in the other tixed track rail, said plate being provided with depending lugs protruding downward ly through the slots in the bed plate, connec tions with said lugs for shifting said frog plate, and means for the downward erape of foreign matter from said slots.

5. A movable frog for railway tracks comprising a bed plate mounted at the r: 1i crossm sald bed )late being 'i'n'ovided with parallel and transversely disposed slots, a movable frog plate mounted on the nod plate and provided with a pair of rail members in angular relation to each other and so disposed that when the frog plate is in one oi its positions one of its rail members completes the interruption of one of the lined track rails and when the frog plate is in its other position its other rail member completes the interruption in the other fixed track rail, said frog plate being provided with depending lugs protruding downwardly through the slots in the bed plate, connections with said lugs for shifting said frog plate, and means comprising apertures in said connections for the downward escape of foreign matter from said slots.

(3. A movable =lrog for railway tracks compri ing a bed plate mounted at the ail crossing, a frog plate mounted on said bed plate and slidable transversely thereof, said frog plate being provided with a pair of rail members in angular relation to each other and so disposed that when the frog plate is shifted into one of its positions one of the rail member completes the interruption ot' one of the stir-(ed track rails and when the trog plate is in its other position the other of its ra l members (iPlliPlfil'QS the in terruption ot the other lined track rail. and means for disn'iounting the frog plate "from and for mounting the frog plate on the bed plate without requiring access to the under side of the latter.

7 A movable frog for railway tracks comprising a bed plate mounted at the rail crossing, a frog plate mounted on said bed plate and slidable transversely thereof, said frog plate'being provided with a pai r of rail members in angular relation to each other and so disposed that when the frog plate is shifted into one of its positions one of the rail members completes the interruption of one of the lined track rails and when the frog plate is in its other position the other of its rail members con'ipl-etes the interruption of the other lined track rail, connections disposed beneath the bed plate for shifting the frog plate, and means whereby the connections may be installed and removed without requiring accesi to the under side of the bed plate.

8. A inovrble 'lrog for railway tracks comp ate mounted at the rail crossla e mounted on id bed plate transversely thereo't, said frog plate o mg provided with a eair of rail members in a" ular r lation to each other a so disposed iat when the frog plate is ited into one or" its positions one of the all members completes the interruption of one of the lined tract: rails and when the trogplate is in its other position the other of its rrl members completes the interruption of the other lined track rail, connections disposed leneatl 'he bed plate for shifting the frog plate, said connections being arranged tor in 'allation and removable without requiring access to the under side of the bed plate.

f). it movable frog for railway tracks comprising a bed plate mounted at the rail crossing, said bed plate being provided with transversely disposed and parallel slots, a frog plate mounted on said bed plate and slidable transversely thereof, said frog plate being provided witl a pair of rail members in angular relation and so disposed that vhen the frog plate is shitted into its one position one of the rail members completes the interruption of one of the fixed tracks and when the frog member is shitted into its other position its other rail member cempletes the interruption of the other fixed track, lugs depending from the frog plate through the slots in the bed plate, pairs oi twin bars disposed below the bed plate and gripping the lugs between them, means be yond the ends of the lugs ior clamping the bars of each pair together. and connections for said bars tor shitting the "iron; plate.

10. A movable 'lrog ior railway tracks comprising a bed plate mounted at the rail crossing, said bed plate being provided with transversely disposed and parallel slots, a frog plate mounted on said bed plate and slidable transversely thereof, said frog plate being provided with a pair of rail members in angular relation and so disposed that when the frog plate is shifted into its one position one of the rail members comgletes the interruption of one of the fixed tracks and when the frog member is shifted into its other position its other rail member coinpletes the interruption of the other fixed track, lugs depending from the frog'plate through the slots in the bed plate, pairs of 5 for holding the bars in-tli'eir clamping relation'to the lugs, said'means being accessibleat either 'side'of the base plate for installing or removing thebars without disturbing the bed plate.

11. A movable frog for comprising a bed plate mounted at the rail crossing, said bed platebeing provided with transversely disposeda'nd parallel slots, a

frog plate mounted on said bed plate and slidable transversely thereof, said frog plate being providedwith a pair of rail members in angular relation and so disposed th'at whenthe frog plate is shifted into its oneposition one of therail' members completes the interruption of one of the fixedtracks and when-the'frog member is shifted into its other position its other rail member com pletes' the interruption of the other fixed I track, lugs depending fromthe frog plate througli'the slots in the bed plate, pairs-0t twin bars disposed below the bed plate and clamping the lugs between them, the opposite endsof the twinb'arsbeing' turned up over the 'bed plate to cover the portions of" the slotswhieh would otherwise be exposed by theshii'tin'g of the frog plate.

12. In'a movabletrog'for railway tracks, the combination of a bed plate mounted at the rail crossing, a pair or end members detachably connected to said bed plate and each 'providedwith pair'of-rail members in angular-relation to each other, said rail members "being alined with the" ends of' the fixed rails of the track, andone'of each pair of rail' members being alined" but spaced from one of the other pair of railmembers, a frog plate mounted on the bed plate'a'nd' slidable transverselythereof, and a pair of rail members on said frog plate and'so disposedthat when the frog plate is'in one of its positions-one of'the frog 'platerail members completes the interruption between two of the rail member's o'ftheend members and when the'trogplate isin it'sother' position the other frog plated-ail membercompletes the interruption between 'theother two rail members of the end members;-

'13; In a movable frog for railway tracks, the'co'mbina'tion of a bed'plate'mountedat the rail crossing, a pair ofend members'xletachably connected tosaid bed plate and each provided with a pair of rail members in angular relation to each other, said rail members being ali'ned with the ends of the hired rails of thetrack, and one of each pair of rail members being ahned but spaced from one of the other pair of rail members,

a' frog'plate mounted 'on' the "bed? plate; and slidable transversely thereof, and a pair rail members on said frog" plate and so disrailway tracksposed that when the frog plateis, in one of its positions one of the frog plate rail members I completes the interruption between two of the rail members of the end members and when the trog plate is in its other position the other frog plate rail member completes the interruption between the other two rail" members of the end members, said bed plate and said frog plate presenting surfaces otdifiterent material in sliding 'contact to minimize friction and wear.

let. In a movable frog for railway tracks, thecombination of a bed plate mounted at therail crossing, a pair or end members detachably connected to said bed plate and each provided with a pair of rail members in angular relation to each other, said rail members being alined with the ends of the fixed rails of the track, and one of each pair of rail members being alined but spaced from onset theother pair of rail members, a frog plate mounted on the bed plate and slidable transversely thereof, and a pair of rail members on said frog plate and so disposed that when the frog plate is in one of its positionsone of the frog plate rail members completes the interruption between" two of the rail members of theend members and when the frog plate is in its other-position the other frog plate rail member' completes the interruption between the othertwo rail membersot' the end n'ieinbers, the under surface of said frog plate being recessed to reduce the areasin sliding contact.

15.111 a movable frog for railway tracks, the. combination oi" a bed platemounted' at the rail crossing. a pair of end members detachably connected to said bed plate and eacl'iprovided with-a pair of rail members in angular relation to each other, said rail members being alined withthe ends of the fixed rails of the track, and one of each pair of rail members being ali-ned but spaced from one otthe other pair of rail. members, a frog plate mounted on the bed plate and slidable'transversely thereof, and a pair of rail members on said frog plate and so disposed. that when the frog plate is in one or" its positions one of the frog plate railmem bers completes the interruption between two of the rail members of the end members and when thefrogplate is in its other position the other frog plate rail member completes theinterruption between the other two rail members of the end members, theunder-surface of said frog plate beingrecessed to reduce the areas in sliding contact and said bed plate and frog plate presenting surfaces of different material in sliding contact to minimize friction andwear.

16; In a movable'trog for railway tracks, the combination of a bed plate mounted at the rail crossing, a pair oi end members of cast steel 'dctachably"connected tothe oppd site ends of the bedplate' and provided with integrally formed rail members alined with the ends 01 the xed track rails and a cast steel frog plate mounted on the bed plate and .slidable transversely thereof, said frog plate having integrally torn'ied thereon rail members which are arranged to be brought by the shifting of the plate into alinement with the proper rail members of the end members.

17. In a movable frog for railway tracks, the combination of a bed plate of rolled steel mounted at the rail crossing, a pair of end members of cast steel detachably connected to the opposite ends of the bed plate and provided with integrally formed rail members alined with the ends of the fixed track rails and a cast steel frog plate mounted on the bed plate and slidable transversely thereof, said frog plate having integrally formed thereon rail members which are arranged to be brought by the shifting of the plate into alinement with the proper rail members of the end members.

18. In a movable frog for railway tracks, the combination of a bed plate mounted at the rail crossing, a frog plate mounted on said bed plate and slidable transversely thereof, .said frog plate being provided with a pair of rail members in angular relation, fixed end members at the opposite ends of said bed plate and provided with pairs of rail members arranged to coact with the rail members of the frog plate, and said end members being provided with recessed portions into which the ends of the track rails extend in alinement With the rail members of the end members, and means for securing the rail ends to the end members.

19. In a movable frog for railway tracks, the combination of a bed plate mounted at the rail crossing, a frog plate mounted on' said bed plate and slidable transversely thereof, said frog plate being provided with a-pair of rail members in angular relation, fixed end members at the opposite ends of said bed plate and provided with pairs of rail members arranged to coact with the rail members of the frog plate, and said end members being provided with recessed portions into which the ends of the track rails extend in alinement with the rail members of the end members, and angle bars for clamping the rail ends to the end members.

20. In a movable frog for railway tracks, the combination of a bed plate mounted at the rail crossing, a frog plate mounted on said bed plate and .slidable transversely thereof, said frog plate being provided with a pair of rail members in angular relation,

fixed end members at the opposite ends of Said bed plate and provided with pairs of rail members arranged to coact with the rail members of the frog plate, and said end members being provided with recessed portions into which the ends of the track rails extend in alinement with the rail members of the end members, and angle bars overlapping the end members and the rail ends and bolted thereto.

21 In a movable frog for railway tracks, the combination of a bed plate mounted at the rail crossing, a shiittable frog .plate' bers in angular relation to each other and alined with the ends of the fixed track rails, said end members being provided with portions in overlapping relation to the bed plate and with shoulders bearing against the ends of the bed plate.

23, In a movable frog for railway tracks, the combination of a bed plate mounted at the rail crossing, a shiftable frog plate mounted on the bed plate, and end members detachably connected to the opposite ends of the bed plate and provided with rail members in angularlrelation to .each other and alined with the ends of the fixed track rails, said end members and the bed plate having portions in interlockingrelation.

24. In a movable frog for railway tracks, the combination of a bed plate mounted at the rail crossing, a shiftable frog plate mounted on the bed plate, and end members detachably connected to the opposite ends of the bed plate and provided with rail members in angular relation to each other and alined with the ends of the fixed track rails, said end members being provided with depending lugs which seat in snugly fitting openings in the bed plate.

25. In a movable frog for railway tracks, the combination of a bed plate mounted at the rail crossing, a shittable frog plate mounted on the bed plate, and end members detachably connected to the opposite ends of the bed plate and provided with rail members in angular relation to eachother and alined with the ends of the fixed trackrails, said end members having portions in overlapping relation to. the bed plate and being also provided with depending lugs seated in snugly fitting openings in the bed plate,

26. In a. movable frog for railwaytra cks, the combination of a bed plate, a frog plate mounted on the bed plate and slidable transversely thereof, a pair of .rail members mounted on the frog plate and so disposed that when the frog plate is in one of its positions one of said rail members oompletes one of the interrupted fixed rails of the track and when the frog plate is in its other position the other rail member completes the other interrupted fixed track rail, and means whereby when iwheels enter the frog from one end of the incompleted track said wheels are directed diagonally across the rail member which is in completing position on to the other end of the incompleted track.

27. In a movable trogt'or railway tracks, the combination oi a bed plate, a frog plate mounted on the bed plate and slidable transversely thereof, a pair of rail members mounted on the frog piate and so disposed that when the frog plate is in one of its positions one oi said rail members completes one of the interrupted fixed rails of the track and when the frog plate is in its other position the other rail member completes the other interrupted fixed track rail, and risers at the outer side of each rail member to direct wheels entering the frog from an end of the incompleted fixed rail diagonally 7 across said rail member. a

yersely, thereof, a pair of rail members .mounted on the frog plate and so disposed that when the frog plate is in one of its positions one of said rail members completes one of the interrupted fixed rails of the track and when the frog plate is in its other position the other rail member completes the other, interrupted fixed track rail, risers at the outer side of each rail member to direct Wheels entering the frog from an end of the incompleted fixed rail diagonally across said rail member, and guard rails on the other side of each of said rail members to deliver said wheels to the proper fixed rail.

Signed at Pittsburgh, Pa., this 9th day of kugust, 1926.

ANTHONY L. VISSAT. 

